Rock Springs RD over State Route 78
FairSan Diego County, California · 11-SD-078-R16.93-ESD · Structure no. 57 0507
- Built
- 1964
- 61 years old, rebuilt 1984
- Condition
- Fair
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 155 ft
- 2 main spans
- Daily traffic
- 9,830
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Rock Springs RD over State Route 78 is a concrete continuous box beam or girders - multiple carrying Rock Springs RD over State Route 78 in San Diego County, California. It was built in 1964 and reconstructed in 1984, so it is 61 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 9,830 vehicles a day, roughly 1% of them trucks, projected to reach 12,573 by 2041. The structure is 155 ft (47.2 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Rock Springs RD over State Route 78 built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1984.
What condition is Rock Springs RD over State Route 78 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.
How much traffic does Rock Springs RD over State Route 78 carry?
About 9,830 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Rock Springs RD over State Route 78?
The structure is 155 ft (47.2 m) long with a longest span of 76 ft (23.2 m) and a deck 35 ft wide.
Who owns Rock Springs RD over State Route 78?
It is owned by the State Highway Agency.